الصفحة 2
الصفحة 2
Wireless Optical Communication Systems
This volume is organized for professional and academic readers engaged in modem design for wireless optical intensity channels. Significant background material is presented on both the properties as well as on fundamental communications principles. Wireless Optical Communication Systems can be used by physicists and experimentalists as an introduction to signalling design as well as communication systems designers.
Wire Ropes : Tension, Endurance, Reliability
The main concern of this book is to present the methods used to calculate the most important rope quantities as well as to explain how they are applied by means of a large number of calculations as examples. The book, based on the most important chapters of the German book DRAHTSEILE, has been kept up to date and the recent developments have been taken into account. The first section of the book deals with the different types of wire rope and their component parts. The second section looks into the effects of wire ropes under tensile forces (stationary ropes). The third section takes a look at the wire ropes under bending and tensile force (running ropes).
Wind Energy Systems for Electric Power Generation
This book deals with Wind-Energy systems and their implementation into the grid, with focus on electrical engineering. Starting from a view on wind as a prominent source of renewable energy, it describes properties and performance of wind turbines, electrical generators and power electronic converters which are the main components of wind energy systems. Much attention is spent on system control, grid implementation and aspects of power quality.
Wide-Gap Chalcopyrites
Chalcopyrites, in particular those with a wide band gap, are fascinating materials in terms of their technological potential in the next generation of thin-film solar cells and in terms of their basic material properties. They exhibit uniquely low defect formation energies, leading to unusual doping and phase behavior and to extremely benign grain boundaries. This book collects articles on a number of those basic material properties of wide-gap chalcopyrites, comparing them to their low-gap cousins. They explore the doping of the materials, the electronic structure and the transport through interfaces and grain boundaries, the formation of the electric field in a solar cell, the mechanisms and suppression of recombination, the role of inhomogeneities, and the technological role of wide-gap chalcopyrites.
Wide Bandgap Semiconductors : Fundamental Properties and Modern Photonic and Electronic Devices
This book offers a comprehensive overview of the development, current state and future prospects of wide bandgap semiconductor materials and related optoelectronics devices. It includes an overview of recent developments in III-V nitride semiconductors, SiC, diamond, ZnO, II-VI materials and related devices including AIGaN/GaN FET, UV LDs, white light LEDs, and cold electron emitters.With 901 references, 333 figures and 21 tables, this book will serve as a one-stop source of knowledge on wide bandgap semiconductors and related optoelectronics devices.
Who Owns the Moon? : Extraterrestrial Aspects of Land and Mineral Resources Ownership
Investigates the permissibility and viability of property rights on the celestial bodies, particularly the extraterrestrial aspects of land and mineral resources ownership. In lay terms, it aims to find an answer to the question "Who owns the Moon?" After critically analyzing and dismantling with legal arguments the trivial issue of sale of extraterrestrial real estate, the book addresses the apparent silence of the law in the field of landed property in outer space, scrutinizing whether the factual situation on the extraterrestrial realms calls for legal regulations. The legal status of asteroids and the relationship between appropriation under international law and civil law appropriation are duly examined, as well as different property patterns – such as the commons regime, the Common Heritage of the Mankind, and the Frontier paradigm.
Well-being, Sustainability and Social Development : The Netherlands 1850–2050
Examines more than two centuries of societal development using novel historical and statistical approaches. It applies the well-being monitor developed by Statistics Netherlands that has been endorsed by a significant part of the international, statistical community. The study also reveals the importance of natural capital: soil, air, water and subsoil resources, showing their relation with the social structure of the ‘here and now´. Treatment and trade of natural resources also impacted on the quality of life ‘later’ and ‘elsewhere.’ Further, the book illustrates the role of natural capital by dividing the capital into three types of raw materials and concomitant material flows: bio-raw materials, mineral and fossil subsoil resources.
Well Logging for Earth Scientists
Well logging lies at the intersection of applied geophysics, petroleum and geotechnical engineering. It has its roots in the tentative electrical measurements in well bores which were made by the Schlumberger brothers some 80 years ago in the earliest days of systematic petroleum exploration. Today, a variety of specialized instruments is used to obtain measurements from the borehole during, as well as after, the drilling process. This readable and authoritative treatment of the physics of these measurements dispels the "black magic" of well log interpretation by relating them, including those obtained by the latest generation of tools, to rock physics. It offers a thorough exposé of the physical basis of borehole geophysical measurements, as well as an introduction to practical petrophysics -- extracting desired properties from well log measurements.
Web Archiving
The public information available on the Web today is larger than information distributed on any other media. The raw nature of Web content, the unpredictable remote changes that can affect it, the wide variety of formats concerned, and the growth in data-driven websites make the preservation of this material a challenging task, requiring specific monitoring, collecting and preserving strategies, procedures and tools. Julien Masanès, Director of the European Archive, has assembled contributions from computer scientists and librarians that altogether encompass the complete range of tools, tasks and processes needed to successfully preserve the cultural heritage of the Web. His book serves as a standard introduction for everyone involved in keeping alive the immense amount of online information, and it covers issues related to building, using and preserving Web archives both from the computer scientist and librarian viewpoints.
Water Quality Hazards and Dispersion of Pollutants
Water resources are under stress worldwide and one of the elements of this stress - man's impact on water quality constitutes a key problem especially in well-developed countries. This problem receives an increasing attention of the public, politicians, decision makers nowadays. People have to answer how to achieve any given level and pattern of water quality in particular watercourses and also how to mitigate the catastrophes that are inseparable elements of civilization. The EU water framework directive, which came into force at the end of 2000, changes the way of monitoring, assessing and managing water in European countries. Three groups of quality elements (biological, hydromorphological and physico-chemical) have been identified in the water framework directive as necessary to classify the ecological status of a particular water body.
Waste Materials in Advanced Sustainable Concrete : Reuse, Recovery and Recycle
Presents solutions for optimizing sustainable concrete fabrication techniques. It shows how to reinforce sustainable concrete by various waste materials such as glass waste, uncrushed cockle shell, plastic waste and ceramic tiles. It also reports on properties’ enhancement of high-strength concrete materials. The book presents an analysis of the environmental impact of waste materials’ use.
Waste Materials and By-Products in Concrete
Non-hazardous waste materials and by-products which are mostly landfilled can be used in making concrete and similar construction materials. This book gives a summary of this usage: one chapter is devoted to each material, comprising an introduction, chemical and physical properties, usage potential, and the impact of the material on the various properties of concrete. The waste materials and by-products covered in the book are; granulated blast furnace slag, metakaolin, waste and recycled plastics, scrap-tire, waste glass, coal fly ash, rice husk ash, municipal solid waste ash, wood ash, volcanic ash, cement kiln dust and foundry sand.
War related neuropsychological disease: Epilepsy
Among the consequences of war, the impact on the mental health of the civilian population is one of the most significant. Studies of the general population show a definite increase in the incidence and prevalence of mental disorders. Women are more affected than men. Other vulnerable groups are children, the elderly and the disabled. Prevalence rates are associated with the degree of trauma, and the availability of physical and emotional support. The use of cultural and religious coping strategies is frequent in developing countries. Epilepsy is a chronic non communicable disease of the brain that affects people of all ages. Around 50 million people worldwide have epilepsy, making it one of the most common neurological diseases globally. Nearly 80% of people with epilepsy live in low- and middle-income countries, it is estimated that up to 70% of people living with epilepsy could live seizure- free if properly diagnosed and treated.
Vulnerability in Scandinavian art and culture
In this book, seventeen scholars discuss how contemporary Scandinavian art and media have become important arenas to articulate and stage various forms of vulnerability in the Scandinavian welfare states.
Vote Buying in Indonesia : The Mechanics of Electoral Bribery
Presents a pathbreaking analysis of vote-buying in Indonesia. Drawing on a stunning array of evidence, Muhtadi reveals the mechanics, patterns and effects of vote-buying with unprecedented clarity.
Vocational Rehabilitation
this book the second in the series of monographs produced by the European Academy of Rehabilitation Medicine. No part of medicine, no clinical intervention, is complete without thinking about its effect on the person’s life and the quality thereof. One of the most powerful determinants of this is work; a source not only of income, but of satisfaction and a sense of purpose and worth.
Vitamin C in human health and disease : Effects, mechanisms of action, and new guidance on intake
Presents the scientific evidence on the effects of vitamin C / Clarifies mechanism of action and benefits / Provides new guidance on daily vitamin C intake Presents the scientific evidence for the role of vitamin C in health and disease and offers new guidance on vitamin C intake in humans. The importance of vitamin C in preventing cancer and cardiovascular disease, its relevance to aging and stress, and its impacts on each of the human body systems are thoroughly assessed on the basis of the author’s extensive research and his deep understanding, as an anatomy professor, of the body as a whole. Findings published in the international scientific literature are fully taken into account, and due consideration is also given to empirical evidence, bearing in mind that mechanisms of action cannot always be precisely defined in the absence of human experiments. Beyond providing an up-to-date scientific perspective on the effects of vitamin C, the author hopes to promote human health worldwide by encouraging proper use of the vitamin.
Vitamin B12
Vitamin, any of several organic substances that are necessary in small quantities for normal health and growth in higher forms of animal life. Vitamins are distinct in several ways from other biologically important compounds such as proteins, carbohydrates, and lipids. Although these latter substances also are indispensable for proper bodily functions, almost all of them can be synthesized by animals in adequate quantities. Vitamins, on the other hand, generally cannot be synthesized in sufficient amounts to meet bodily needs and therefore must be obtained from the diet or from some synthetic source. For this reason, vitamins are called essential nutrients. Vitamins also differ from the other biological compounds in that relatively small quantities are needed to complete their functions. In general, these functions are of a catalytic or regulatory nature, facilitating or controlling vital chemical reactions in the body’s cells.
Visual Communication for Architects and Designers : Constructing the Persuasive Presentation
Teaches you the art of designing a concise, clear, compelling and effective visual and verbal presentation. Margaret Fletcher has developed a reference manual of best practices that gives you the necessary tools to present your work in the best way possible. It includes an impressive 750 presentation examples by over 180 designers from 24 countries in North America, South America, Europe, the Middle East, Asia, Oceania and Africa. This book offers actionable advice to solve a variety of complex presentation challenges. You will learn how to: Understand differences in communication design, representation design and presentation design and know how to use these skills to your advantage / Structure the visual and verbal argument in your presentation / Design your presentation layouts, architectural competitions, boards and digital presentations / Manage issues related to the presentation of architectural and design ideas / Present yourself professionally.
Visions of Heaven : the dome in European architecture
Visions of Heaven shows more than 120 images, including the Roman Pantheon, the Byzantine churches of Turkey, the great domes of the Renaissance, the decorative cupolas of the Baroque and the Rococo ages, and a nineteenth-century synagogue in Hungary.
